Home / 156,986.90-235,480.35-143,208.80

Finding the Fourth Proportional to 156,986.90, 235,480.35 and 143,208.80

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Solution

The fourth proportional to 156,986.90, 235,480.35 and 143,208.80 is: 214,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.90 : 235,480.35 = 143,208.80 : x
  2. Step 2: Convert to fraction form
    156,986.90/235,480.35 = 143,208.80/x
  3. Step 3: Cross multiply
    156,986.90x = 235,480.35 × 143,208.80
  4. Step 4: Simplify right side
    156,986.90x = 33,722,858,347.08
  5. Step 5: Solve for x
    x = 33,722,858,347.08/156,986.90
  6. Step 6: Final answer
    x = 214,813.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.